i recently installed long tube american racing headers with high flow cats 1 /78 and love them but i am having so much trubble trying to get rid of the slow circut response and bank 2 too l3ean codes anyone else have these issues? thanks

 

I had kooks on my G8... you are probably going to need a custom tune. Long tubes put the truck outside the corrections table's scope so you will get errors.

 

Try calling or email them and maybe they can lead you in the right direction.